Engine operating time hour meter



FIG. 1 is a top, front and left side perspective view of an engine operating time hour meter showing our new design;

FIG. 2 is a bottom, rear and right side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a left side elevational view thereof.

The broken line showing of display readout is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an engine operating time hour meter, as shown and described. 